Process of making blasting-cartridges



v (No Model.)

v. G. M. PETERS.

PROGESS OF MAKING BLASTING CARTRIDGES.

No. 542,103. Patented July 2, 1895.

Wiinafiseb': Invenior:

UN TED. STATES ATENT (lesion.

GERSHOMlMOORE PETERS, OF CINCINNATI, OHIO.

PROCESS OF MAKING BLASTING-CARTRIDGES.

SPECIFICATION forming part of Letters Patent No. 542,103, dated July 2, 1895.

Original application filed June 13, 1891, Serial No. 396,105. Divided and this application filed January 9. 1893" Serial No.

I 457,805. (No model.)

To all whom it may concern.-

Be it known that I, GERSHOM MOORE PE- TERS, a citizen of the United States, residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented new and useful Improvements in Processes of Making Blasting-Cartridges, of which the following is a specification.

This invention relates to a process or method of making blasting-cartridges; and its object is to produce a cartridge of a construction which will be effective and at the same time Very economical.

The figure of the drawing represents a side View, partly in section, of a blasting-cartridge in condition for shipment made in accordance with the process.

It is a common plan of procedure in the manufacture of blasting-cartridges to pack the powder in cases of a suitable size, closed by heads, in one of which there is provided an aperture which is normally sealed in some suitable manner, so as to prevent the access of moisture or any foreign substance to the powder while it is being shipped or stored for subsequent use. l/Vhen it is desired to use the cartridge, the aperture in its head is unsealed and the detonating-cap passed through the aperture into the powder and connected by a suitable fuse, whether electric or of any other variety, to the outside point at which it is to be touchedofi.

Inasmuch as the cartridge-case is destroyed whenever the powder is used for blasting purposes, it is of course of great importance to make this case as cheaply as possible, and this object can best be accomplished by employing the most economical material suitable for the purpose, and the simplest form of construction adapted for the ends in View. The proper materials need not be herein specifically mentioned, for they form no part of the present invention, but an economical mode is herein described.

A suitable case, which in the drawing is designated by the letter A, may be made of a cylindrical form or in any proper shape and composed of waterproof paper or other suitable substance. The ends of the case may be closed by disks formed of heavy straw or card board or other material adapted for the purpose, cut to closely fit the internal diameter of the case and secured thereto by glue or.

tially pushed through the head and remains to form what may be termed a temporay and removable stopper which tightly fits the aperture during the transportation of the package and until itis desired to use the cartridge, whereby the access of moisture or other foreign matter to the powder is prevented. This stopper is plainly shown in the drawing in the position in which it is left after the punch has acted upon it, and is designated by the letter B.

WVhen it is desired to use the cartridge, the stopper may be readily removed by a'slight blow by a tool or blasting-barrel, and then the cartridge is in condition for the insertion of the safety-fuse, blasting-barrel, or electric fuse through the aperture, and may be employed for blasting purposes in the usual way.

In practice, I prefer to punch at suitable determinate distances in a blank,in the manner described, by any convenient form of punching machine, and at the same time or after-- ward sever the head from such blank. In this manner complete heads with temporary removable-stoppers may be made with great rapidity and consequent cheapness.

I am aware that it is not new to form a pocket or recess in the head of a blasting-cartridge by means of a cutting or boring tool, for this construction is shown in my former patent, No. 422,4et1, dated March 4, 1890; and I am also aware that is not new to make an aperture through one end of a metal cartridgecase through which aperture the fuse is inserted and clamped tightly by means of a screw-threadedcap having a stuffing-box or packing to hermetically close the case and render it impervious to dampness or Water, for this construction'is shown in the patent to Butterfield and Batchelor, No. 415,899, dated November 26, 1889.

ICO

I have also invented another process of manufacturing blasting-cartridges in which an aperture is punched entirely through the head of the cartridge-case, and afterward the material thus punched out is reinserted, so as to form a tightly-fitting stopper, and said process is set forth in my application, Serial No. 362,073, filed August 15, 1890; but the invention embraced in the present application is different from that above referred to.

This application is a division of my application filed June 13, 1891, Serial No. 396,105, and is filed as a continuation of said former application, or so much thereof as relates to the process.

What I claim, and desire to secure by Letters Patent, is

1. The herein described process for making blasting cartridges which consists in punching an aperture partly through the head by arresting the punch before the blank is entirely forced from the aperture thereby formed, whereby a temporary removable stopper is produced; substantially as and for the purpose set forth.

2. The herein described process of making a blasting cartridge which consists in punching a portion of the material through the head but leaving such partly punched blank in the hole soas to form a temporary stopper; substantially as and for the purpose set forth.

GERSHOM MOORE PETERS.

WVitnesses:

FRED 0. TUTTLE, A. M. BEEKLEY. 

